Floor scraper



Dec. 1l, 1928.

E. L. HARRINGTQN FLOOR SCRAPER Filed Sept. 24, 1925 jgl BY 729W/ ATTORNEYS.;

Patented Dec. 11, 1928.

i* cuirs stares errar EDWARD L. HARRINGTON, or nain, PENNSYLVANIA, Assreuoa To G. H. wrriLrAMs COMPANY, OF ERIE, PENNSYLVANIA,

A CORPORATION orv` PENNSYLVANIA.

FLOOR scRArER.

Application filed September able in such places and in the present apparatus the scraper is so designed. Featuresv and details of the invention will appear from the specification and claims. l

The invention is illustrated in the accompanying drawings as follows Fig. 1 shows a side elevation of the device, parts being broken away to better show construction.

Fig. 2 a plan view of the scraper.

Fig. 3 a. sectional perspective view of the catch on the line 8 3 in Fig. 1.

Fig. l a vsection on the line 4 4 in Fig. 1.

yThe track 'frame is made up of side channels 1 1 andcenter channels 2 2, the center channels being back to back so that the faces or" the channels 2 2 are opposed to the chan-v nels' 1 1. These channels are inclined to- .ward the center and a tie bar 3 isarranged tied together by cross plates 6 which are mounted slightly above the' channelsv so as to give clearance through brackets 5 which areV secured to the channels and the cross plates. End bars7 or plates 7 are secured to the ends of the channels. i

Opposing scrapers in the form oi'buckets 8 are mounted on the track. These scrapers have the bottom edges forming the scraping edge and a half-barrel shaped vertical wall 11. The Scrapers are slidingly mounted in the track frame.` Brackets 12 are secured at the two sides and upper edges of the Scrapers and have thev rollers 13 which extend into the channels 1. Brackets 14; 'extend upwardly from the rear edges of the buckets and have j rollers 15 which extend into the channels 2.

These brackets are so shaped as tohold the scraper with the bottom in a horizontal position notwithstanding the inclination of the channel tracks.

A trolley frame is formed of two side plates 16. Rollers 17 are mounted on the inside of the side Vplate and extend into .the channels 2,. A pin 18 extends through the side plates 16, the ends projecting outwardly from the side plates. A catch lever 19 .is

24, 1925. serial no. 58,455.

catch 21-which is adapted' to engage the catch shoulders 22 on a cross frame 22a in the upper part of the. bucket. -v Cables28 are secured by eyes 24; on the pins 18 and extend under pulleys 25 mounted in the head plates 26 of the track frame. rlhe cables are looped over an evener bar or hanger 27 and a ,hoist hook 28 engages the hanger27. A rollerV 29 is journaled on the pin 20 and engages a spring 30 arranged under the channels 2 as the trolley/moves along these channels. i

vWeights, 31 arearrang'ed on the/catch levers 19 and are of suiiicientinagnitude to form a preponderance sucientto tip the outer ends of the leve-rs downwardly so as torelease the catch 21 from'the catch relieved of pressure. V

shoulders 22, when The operation of the device is as follows: i

Vith the parts in the position showny in Fig. 1, the trolleys areat their outerpart. The

roller 29 Ais operated upon by thefspringBO to yieldingly force thev catch'21 into engagement with the catch shoulder 22. -With a hoisting vmovement of the hoist 28 the trolleys are drawn inwardly and the Scrapers are carried with the trolleys because of the engagement of the hooks or catches 21 with `the vcatch shoulders. The frame is ofsullicient weight so that this inward movement will take place-*without appreeiably liftingthe Scrapers and as'thescrapers move inwardly the frame, is gradually lOWeredtOcOm'pensate forthe inclination. The engaging. sur- 22 is slightly undercut so that as long as the pressure is maintained on the cables and consequently on the hooks the weight `81 is not suiiicient' to disengage these hooks. TheA Scrapers are, therefore, `drawntoward each other as far as desired by a mere hoisting operation of the hoist. When? the Scrapers have reached the inward positionas far as it is desired the .hoist is slackedr and ask the cables areslacked the weights on the catches swing the catch levers so as torelease the catches 21 rfrom thel shoulders 22. As the hoist is againlifted the scrapers rolldown the inclined tracks formed lby the frames to their outer position.- The hoist is then again -face between thecatch 21 and the shoulder tracks tothe outer position, the springs operating on the rollers throwing thecatches again into engagement. I prefer to provide the shoe 32 around the bottom edge of the Scrapers as a guard against digging into the floor.

What I claim as new is l. In a floor scraper, the combination'of a ltrack frame; scraper blades opposingly faced and AslidinglyV and rigidly mounted on the. frame; hoistingmeans; and mechanism a`cting with the frame-and hoisting means moving the scrapers toward and from each other. 2.4 In a'loor scraper, the'combination of a trackV frame; bucket-shaped scraper blades the scrapers toward and from each other.

4.4 In a floor scraper, the combination of a track frame; scraper blades opposingly faced and slidingly mounted on the` frame a catch carrier for each blade slidingly mount- 4ed on the frame; catches onV the carriers adapted to engage the blades; a'hoist; and means actuated by the hoist' actuating the carriers and blades toward and from each other. 1 .y

, 5. In a floor scraper, thecombination of a track frame; scraper blades opposingly faced and slidingly mounted on the frame; a

- catch .carrier for 'eachl blade '.slidingly /m'ountedvon the frame; catches on` the carriers adapted to engage the blades; a hoist;

Vand means actuated ,by the `hoist actuating the catches, carriers and bladestoward and from eachother. i v Y Y 6. Ina floor scraper, the combination of a track frame; V scraper blades opposingly faced and slidingly mounted on the frame; a

i catch carrier for each blade slidingly mounted on the frame; catches pivotally mounted on the catch carriers and adapted toengage the blades ;Vmeans tending to release the same as the carriers and blades leave the Yend of the frame; and means atjthe ends of the frame vmoving the catches into engagement.

7L In a floor scraper, the combination of trackk frame; scraper blades opposingly faced andslidingly mounted on the frame; a

' catch carrier for each blade slidingly mounted on the frame; catches pivotally mounted on the catchcarriers and adaptedv to engage Ythe the carriers and blades leave the end of the frame; means at the ends of the frame moving the catches into engagement; ahoist;

\ and means actuated b 'Y `the hoist actuatino the carriers and blades toward and from each other.

8. In a floor scraper, the combination of track frame having oppositely and inwardly inclined track sections; scraper blat es opposingly faced and slidingly and rigidly mounted on the frame; hoisting means; and mechanism acting withthe frame and heisting means moving the scrape-rs toward and from each other. c j

9. In a floor scraper', the combination of a track frame having oppositely inclined track sections; scraper ,d blades opposingly faced and slidingly'mounted on the frame; catch carriers for each blade slidingly mounted on the frame; catches mounted Yon the inclined track sections; catches on the carriers adapted to engage the'blades; a hoist; and means rblades ;\means tending to release the same as y actuated by the Ahoist actuating the carriers and blades toward and from each other. y

l0. In a floor scraper, the combination of a track rrame having oppositely'inclined track sections; scraper blades opposingly faced and slidingly monnjtedV on the frame; k"catch'carriers o n each blade slidingly mounted on' the frame; catches mounted on the inclined track sections; catches on the carriers ,Y adapted to engage the blades; a hoist; and means actuatcdby the hoist actuating'the catches, carriers and blades toward andfrom each other.V

11. In a floor scraper, the combination of Y open bottom scraping blades; and mechanism actuated and controlled entirely from a single hoisting means hoisting Vand actuating the blades toward and from each other closing and opening the same forscraping material intoaheap. f l" 12. In a floor scraper, the combination of'a EDWARD L. HARRiNGToN. j

rtrack frame; scraper blades opposingly faced 

